xf_gfx.c

 
#include <freerdp/config.h>
 
#include <math.h>
#include <winpr/assert.h>
#include <freerdp/log.h>
#include "xf_gfx.h"
#include "xf_rail.h"
 
#include <X11/Xutil.h>
 
#define TAG CLIENT_TAG("x11")
 
static UINT xf_OutputUpdate(xfContext* xfc, xfGfxSurface* surface)
{
  UINT rc = ERROR_INTERNAL_ERROR;
  UINT32 surfaceX = 0;
  UINT32 surfaceY = 0;
  RECTANGLE_16 surfaceRect = { 0 };
  UINT32 nbRects = 0;
  const RECTANGLE_16* rects = NULL;
 
  WINPR_ASSERT(xfc);
  WINPR_ASSERT(surface);
 
  rdpGdi* gdi = xfc->common.context.gdi;
  WINPR_ASSERT(gdi);
 
  rdpSettings* settings = xfc->common.context.settings;
  WINPR_ASSERT(settings);
 
  surfaceX = surface->gdi.outputOriginX;
  surfaceY = surface->gdi.outputOriginY;
  surfaceRect.left = 0;
  surfaceRect.top = 0;
  surfaceRect.right = surface->gdi.mappedWidth;
  surfaceRect.bottom = surface->gdi.mappedHeight;
  XSetClipMask(xfc->display, xfc->gc, None);
  XSetFunction(xfc->display, xfc->gc, GXcopy);
  XSetFillStyle(xfc->display, xfc->gc, FillSolid);
  region16_intersect_rect(&(surface->gdi.invalidRegion), &(surface->gdi.invalidRegion),
                          &surfaceRect);
  const double sx = 1.0 * surface->gdi.outputTargetWidth / (double)surface->gdi.mappedWidth;
  const double sy = 1.0 * surface->gdi.outputTargetHeight / (double)surface->gdi.mappedHeight;
 
  if (!(rects = region16_rects(&surface->gdi.invalidRegion, &nbRects)))
    return CHANNEL_RC_OK;
 
  for (UINT32 x = 0; x < nbRects; x++)
  {
    const RECTANGLE_16* rect = &rects[x];
    const UINT32 nXSrc = rect->left;
    const UINT32 nYSrc = rect->top;
    const UINT32 swidth = rect->right - nXSrc;
    const UINT32 sheight = rect->bottom - nYSrc;
    const UINT32 nXDst = (UINT32)lround(1.0 * surfaceX + nXSrc * sx);
    const UINT32 nYDst = (UINT32)lround(1.0 * surfaceY + nYSrc * sy);
    const UINT32 dwidth = (UINT32)lround(1.0 * swidth * sx);
    const UINT32 dheight = (UINT32)lround(1.0 * sheight * sy);
 
    if (surface->stage)
    {
      if (!freerdp_image_scale(surface->stage, gdi->dstFormat, surface->stageScanline, nXSrc,
                               nYSrc, dwidth, dheight, surface->gdi.data, surface->gdi.format,
                               surface->gdi.scanline, nXSrc, nYSrc, swidth, sheight))
        goto fail;
    }
 
    if (xfc->remote_app)
    {
      XPutImage(xfc->display, xfc->primary, xfc->gc, surface->image, nXSrc, nYSrc, nXDst,
                nYDst, dwidth, dheight);
      xf_lock_x11(xfc);
      xf_rail_paint_surface(xfc, surface->gdi.windowId, rect);
      xf_unlock_x11(xfc);
    }
    else
#ifdef WITH_XRENDER
        if (freerdp_settings_get_bool(settings, FreeRDP_SmartSizing) ||
            freerdp_settings_get_bool(settings, FreeRDP_MultiTouchGestures))
    {
      XPutImage(xfc->display, xfc->primary, xfc->gc, surface->image, nXSrc, nYSrc, nXDst,
                nYDst, dwidth, dheight);
      xf_draw_screen(xfc, nXDst, nYDst, dwidth, dheight);
    }
    else
#endif
    {
      XPutImage(xfc->display, xfc->drawable, xfc->gc, surface->image, nXSrc, nYSrc, nXDst,
                nYDst, dwidth, dheight);
    }
  }
 
  rc = CHANNEL_RC_OK;
fail:
  region16_clear(&surface->gdi.invalidRegion);
  XSetClipMask(xfc->display, xfc->gc, None);
  XSync(xfc->display, False);
  return rc;
}
 
static UINT xf_WindowUpdate(RdpgfxClientContext* context, xfGfxSurface* surface)
{
  WINPR_ASSERT(context);
  WINPR_ASSERT(surface);
  return IFCALLRESULT(CHANNEL_RC_OK, context->UpdateWindowFromSurface, context, &surface->gdi);
}
 
static UINT xf_UpdateSurfaces(RdpgfxClientContext* context)
{
  UINT16 count = 0;
  UINT status = CHANNEL_RC_OK;
  UINT16* pSurfaceIds = NULL;
  rdpGdi* gdi = (rdpGdi*)context->custom;
  xfContext* xfc = NULL;
 
  if (!gdi)
    return status;
 
  if (gdi->suppressOutput)
    return CHANNEL_RC_OK;
 
  xfc = (xfContext*)gdi->context;
  EnterCriticalSection(&context->mux);
  context->GetSurfaceIds(context, &pSurfaceIds, &count);
 
  for (UINT32 index = 0; index < count; index++)
  {
    xfGfxSurface* surface = (xfGfxSurface*)context->GetSurfaceData(context, pSurfaceIds[index]);
 
    if (!surface)
      continue;
 
    /* If UpdateSurfaceArea callback is available, the output has already been updated. */
    if (context->UpdateSurfaceArea)
    {
      if (surface->gdi.handleInUpdateSurfaceArea)
        continue;
    }
 
    if (surface->gdi.outputMapped)
      status = xf_OutputUpdate(xfc, surface);
    else if (surface->gdi.windowMapped)
      status = xf_WindowUpdate(context, surface);
 
    if (status != CHANNEL_RC_OK)
      break;
  }
 
  free(pSurfaceIds);
  LeaveCriticalSection(&context->mux);
  return status;
}
 
UINT xf_OutputExpose(xfContext* xfc, UINT32 x, UINT32 y, UINT32 width, UINT32 height)
{
  UINT16 count = 0;
  UINT status = ERROR_INTERNAL_ERROR;
  RECTANGLE_16 invalidRect = { 0 };
  RECTANGLE_16 intersection = { 0 };
  UINT16* pSurfaceIds = NULL;
  RdpgfxClientContext* context = NULL;
 
  WINPR_ASSERT(xfc);
  WINPR_ASSERT(xfc->common.context.gdi);
 
  context = xfc->common.context.gdi->gfx;
  WINPR_ASSERT(context);
 
  invalidRect.left = x;
  invalidRect.top = y;
  invalidRect.right = x + width;
  invalidRect.bottom = y + height;
  status = context->GetSurfaceIds(context, &pSurfaceIds, &count);
 
  if (status != CHANNEL_RC_OK)
    goto fail;
 
  if (!TryEnterCriticalSection(&context->mux))
  {
    free(pSurfaceIds);
    return CHANNEL_RC_OK;
  }
  for (UINT32 index = 0; index < count; index++)
  {
    RECTANGLE_16 surfaceRect = { 0 };
    xfGfxSurface* surface = (xfGfxSurface*)context->GetSurfaceData(context, pSurfaceIds[index]);
 
    if (!surface || (!surface->gdi.outputMapped && !surface->gdi.windowMapped))
      continue;
 
    surfaceRect.left = surface->gdi.outputOriginX;
    surfaceRect.top = surface->gdi.outputOriginY;
    surfaceRect.right = surface->gdi.outputOriginX + surface->gdi.outputTargetWidth;
    surfaceRect.bottom = surface->gdi.outputOriginY + surface->gdi.outputTargetHeight;
 
    if (rectangles_intersection(&invalidRect, &surfaceRect, &intersection))
    {
      /* Invalid rects are specified relative to surface origin */
      intersection.left -= surfaceRect.left;
      intersection.top -= surfaceRect.top;
      intersection.right -= surfaceRect.left;
      intersection.bottom -= surfaceRect.top;
      region16_union_rect(&surface->gdi.invalidRegion, &surface->gdi.invalidRegion,
                          &intersection);
    }
  }
 
  free(pSurfaceIds);
  LeaveCriticalSection(&context->mux);
  IFCALLRET(context->UpdateSurfaces, status, context);
 
  if (status != CHANNEL_RC_OK)
    goto fail;
 
fail:
  return status;
}
 
static UINT32 x11_pad_scanline(UINT32 scanline, UINT32 inPad)
{
  /* Ensure X11 alignment is met */
  if (inPad > 0)
  {
    const UINT32 align = inPad / 8;
    const UINT32 pad = align - scanline % align;
 
    if (align != pad)
      scanline += pad;
  }
 
  /* 16 byte alingment is required for ASM optimized code */
  if (scanline % 16)
    scanline += 16 - scanline % 16;
 
  return scanline;
}
 
static UINT xf_CreateSurface(RdpgfxClientContext* context,
                             const RDPGFX_CREATE_SURFACE_PDU* createSurface)
{
  UINT ret = CHANNEL_RC_NO_MEMORY;
  size_t size = 0;
  xfGfxSurface* surface = NULL;
  rdpGdi* gdi = (rdpGdi*)context->custom;
  xfContext* xfc = (xfContext*)gdi->context;
  surface = (xfGfxSurface*)calloc(1, sizeof(xfGfxSurface));
 
  if (!surface)
    return CHANNEL_RC_NO_MEMORY;
 
  surface->gdi.codecs = context->codecs;
 
  if (!surface->gdi.codecs)
  {
    WLog_ERR(TAG, "global GDI codecs aren't set");
    goto out_free;
  }
 
  surface->gdi.surfaceId = createSurface->surfaceId;
  surface->gdi.width = x11_pad_scanline(createSurface->width, 0);
  surface->gdi.height = x11_pad_scanline(createSurface->height, 0);
  surface->gdi.mappedWidth = createSurface->width;
  surface->gdi.mappedHeight = createSurface->height;
  surface->gdi.outputTargetWidth = createSurface->width;
  surface->gdi.outputTargetHeight = createSurface->height;
 
  switch (createSurface->pixelFormat)
  {
    case GFX_PIXEL_FORMAT_ARGB_8888:
      surface->gdi.format = PIXEL_FORMAT_BGRA32;
      break;
 
    case GFX_PIXEL_FORMAT_XRGB_8888:
      surface->gdi.format = PIXEL_FORMAT_BGRX32;
      break;
 
    default:
      WLog_ERR(TAG, "unknown pixelFormat 0x%" PRIx32 "", createSurface->pixelFormat);
      ret = ERROR_INTERNAL_ERROR;
      goto out_free;
  }
 
  surface->gdi.scanline = surface->gdi.width * FreeRDPGetBytesPerPixel(surface->gdi.format);
  surface->gdi.scanline = x11_pad_scanline(surface->gdi.scanline, xfc->scanline_pad);
  size = 1ull * surface->gdi.scanline * surface->gdi.height;
  surface->gdi.data = (BYTE*)winpr_aligned_malloc(size, 16);
 
  if (!surface->gdi.data)
  {
    WLog_ERR(TAG, "unable to allocate GDI data");
    goto out_free;
  }
 
  ZeroMemory(surface->gdi.data, size);
 
  if (FreeRDPAreColorFormatsEqualNoAlpha(gdi->dstFormat, surface->gdi.format))
  {
    WINPR_ASSERT(xfc->depth != 0);
    surface->image =
        XCreateImage(xfc->display, xfc->visual, xfc->depth, ZPixmap, 0,
                     (char*)surface->gdi.data, surface->gdi.mappedWidth,
                     surface->gdi.mappedHeight, xfc->scanline_pad, surface->gdi.scanline);
  }
  else
  {
    UINT32 width = surface->gdi.width;
    UINT32 bytes = FreeRDPGetBytesPerPixel(gdi->dstFormat);
    surface->stageScanline = width * bytes;
    surface->stageScanline = x11_pad_scanline(surface->stageScanline, xfc->scanline_pad);
    size = 1ull * surface->stageScanline * surface->gdi.height;
    surface->stage = (BYTE*)winpr_aligned_malloc(size, 16);
 
    if (!surface->stage)
    {
      WLog_ERR(TAG, "unable to allocate stage buffer");
      goto out_free_gdidata;
    }
 
    ZeroMemory(surface->stage, size);
    WINPR_ASSERT(xfc->depth != 0);
    surface->image =
        XCreateImage(xfc->display, xfc->visual, xfc->depth, ZPixmap, 0, (char*)surface->stage,
                     surface->gdi.mappedWidth, surface->gdi.mappedHeight, xfc->scanline_pad,
                     surface->stageScanline);
  }
 
  if (!surface->image)
  {
    WLog_ERR(TAG, "an error occurred when creating the XImage");
    goto error_surface_image;
  }
 
  surface->image->byte_order = LSBFirst;
  surface->image->bitmap_bit_order = LSBFirst;
 
  region16_init(&surface->gdi.invalidRegion);
 
  if (context->SetSurfaceData(context, surface->gdi.surfaceId, (void*)surface) != CHANNEL_RC_OK)
  {
    WLog_ERR(TAG, "an error occurred during SetSurfaceData");
    goto error_set_surface_data;
  }
 
  return CHANNEL_RC_OK;
error_set_surface_data:
  surface->image->data = NULL;
  XDestroyImage(surface->image);
error_surface_image:
  winpr_aligned_free(surface->stage);
out_free_gdidata:
  winpr_aligned_free(surface->gdi.data);
out_free:
  free(surface);
  return ret;
}
 
static UINT xf_DeleteSurface(RdpgfxClientContext* context,
                             const RDPGFX_DELETE_SURFACE_PDU* deleteSurface)
{
  rdpCodecs* codecs = NULL;
  xfGfxSurface* surface = NULL;
  UINT status = 0;
  EnterCriticalSection(&context->mux);
  surface = (xfGfxSurface*)context->GetSurfaceData(context, deleteSurface->surfaceId);
 
  if (surface)
  {
    if (surface->gdi.windowMapped)
      IFCALL(context->UnmapWindowForSurface, context, surface->gdi.windowId);
 
#ifdef WITH_GFX_H264
    h264_context_free(surface->gdi.h264);
#endif
    surface->image->data = NULL;
    XDestroyImage(surface->image);
    winpr_aligned_free(surface->gdi.data);
    winpr_aligned_free(surface->stage);
    region16_uninit(&surface->gdi.invalidRegion);
    codecs = surface->gdi.codecs;
    free(surface);
  }
 
  status = context->SetSurfaceData(context, deleteSurface->surfaceId, NULL);
 
  if (codecs && codecs->progressive)
    progressive_delete_surface_context(codecs->progressive, deleteSurface->surfaceId);
 
  LeaveCriticalSection(&context->mux);
  return status;
}
 
static UINT xf_UpdateWindowFromSurface(RdpgfxClientContext* context, gdiGfxSurface* surface)
{
  WINPR_ASSERT(context);
  WINPR_ASSERT(surface);
 
  rdpGdi* gdi = (rdpGdi*)context->custom;
  WINPR_ASSERT(gdi);
 
  xfContext* xfc = (xfContext*)gdi->context;
  WINPR_ASSERT(gdi->context);
 
  if (freerdp_settings_get_bool(gdi->context->settings, FreeRDP_RemoteApplicationMode))
    return xf_AppUpdateWindowFromSurface(xfc, surface);
 
  WLog_WARN(TAG, "function not implemented");
  return CHANNEL_RC_OK;
}
 
void xf_graphics_pipeline_init(xfContext* xfc, RdpgfxClientContext* gfx)
{
  rdpGdi* gdi = NULL;
  const rdpSettings* settings = NULL;
  WINPR_ASSERT(xfc);
  WINPR_ASSERT(gfx);
 
  settings = xfc->common.context.settings;
  WINPR_ASSERT(settings);
 
  gdi = xfc->common.context.gdi;
 
  gdi_graphics_pipeline_init(gdi, gfx);
 
  if (!freerdp_settings_get_bool(settings, FreeRDP_SoftwareGdi))
  {
    gfx->UpdateSurfaces = xf_UpdateSurfaces;
    gfx->CreateSurface = xf_CreateSurface;
    gfx->DeleteSurface = xf_DeleteSurface;
  }
  gfx->UpdateWindowFromSurface = xf_UpdateWindowFromSurface;
}
 
void xf_graphics_pipeline_uninit(xfContext* xfc, RdpgfxClientContext* gfx)
{
  rdpGdi* gdi = NULL;
 
  WINPR_ASSERT(xfc);
 
  gdi = xfc->common.context.gdi;
  gdi_graphics_pipeline_uninit(gdi, gfx);
}